Glass-forming machine



Nov. 22,1927. Y I v 1,650,368-

R. LA FRANCE GLASS FORMING MACHINE Filed'qamu. i926 Z SheetS-Shee-t 1 NTOR Nov.'22, 1927 1,650,368,

R. LA FRANCE GLASS FORMING MACHINE Filed Jan 11. 1926 2 Sheets-Sheet 2 INVENTOR ago RA/EY Patented New. i927;

STATES QFFECE.

RICHARD LA FRANCE, F TOLEDO, OHIO, ASSIGNOR TO THE {OWENS BQTTLE COMPANY,

' OF TDLEDO, OHIO, A CQRPORATION OF OHIO.

GLASS-FORMING MACHINE.

Application filed January 11, 1928. Serial No. 80,498.

My invention relates to glass forming mar chines adapted for making bottles or other hollow glassware, and particularly to machines in which a bare parison of plastic glass is held suspended before the finish ng mold encloses it prior to the final blowing operation.

An object of the invention 1s to provide improved means for engaging and center- 1 ing the depending parison before 1t enclosed in the finishing mold. in its preferred form, the invention is adapted for use in a machine in which the bare parison after being formed in a blank mold and 15 while supported ina neck mold, is swung downward by inverting the neck mold, thus swinging the parison from a position in which it extends upward from the neck mold, to a vertically depending position.

A. further object of the invention is to permit a rapid inverting movement of the parison in its transfer from the blank mold to osition to be enclosed. mold and at the same time avoid injury to of'its downward swing.

Other features of the invention will appear hereinafter.

In the accompanying drawings:

Figure l is a fragmentary plan view show ing a series of finishing molds and the blank centering means.

Figure 2 is a diagrammatic view illustrating the inverting movement of the parison and showing the centering arm positioned to arrest the parison.

Figure 3 is a plan view or" an open finishing mold and the blank centering arm.

nigure i is a similar View showing the centering arm withdrawn and the mold closed.

.Figure 5 is a part sectional elevation showing the centering arm in engagement with the depending parison.

Figure 6 is an elevation showing the centering arm withdrawn and the mold in closed position. The invention is herein shown as applied to a bottle blowing machine comprising a mold carriage lOwhich rotates about a central stationary column 11. A series of finishing molds M are;mounted on the mold carriage torotate therewith. Each mold comprises separable sections 12 carried on arms 13 and is mounted to swing about in the finishing the blank as it is arrested at the completion shaft 30. The arm 27 a common axis. The means for efiect' and controlling the o ning and closing movements'of the mol 5, comprises a stationary cam 15 (Fig. l). .nections between each mold and the cam comprise a roll 16 running on the cam, said roll carried by an arm 17' secured to a rock As the mold carriage rotates, each finishing mold is brought successively to the oeitions A, B, C, D and E. The cam 15 1s so shaped that the mold is held closed while at the position A. As it travels to position B, it is partially opened. At position C it is opened still wider, but not to its fullest extent. At position D it is fully opened. At position E it is again closed.

The parisons of glass are given a, reliminary shaping in blank molds (not Shown) while the neck end of the parison is formed in a neck mold 23 (Fig.2) The blank mold then opens, leaving the bare parison P projecting upward from the neck mold after which the neck mold is inverted about a horizontal axis to swing the parison from. the upright position a (Fig. 2) to the vertically depending position Z).

When the bare parison is swung downward by the inversion oi. the neck mold, it is centered with respect to the finishing mold. before the latter closes, by means of a con tering device comprising acentering finger or plate 26 carried by an arm 27 pivoted at 28-to a yoke 29 attached to a non-rotating carriesfa cam .roll 31 groove formedin a which runs in a cam the hub of the arm-13 so that the cam swings about the axis of the shaft 30 during the opening and closing movements of the tin-- ishing mold.

' The parison P is swung downward by in verting the neck mold 23 and is thereby brought between the separated'sections of the finishin m0ld when the latter is at perating concam plate 32. The cam plate is attached to too position C ig. 1). The finishing mold at i this time is open, but not to its widest extent. The inverting movement of the neck mold is arrested when the parison reaches its" vertical depending position shown full lines in Figure 2. The linger st this time is held in tlie Figure 2 position. permittin the psrison sf'er the neclr mold is arrested to swing s elicit distance beyond its depending vertical position to the dotted line position before engaging the centering linger. This positioning of the centering finger so that the psrison can swing s short distance beyond central position, prevents the from being arrested too suddenly end thereby prevents distortion and. also prevents creaking or checking the adjacent to the neck mold which mic; it otherwise occur. lilettenirig and chilling of the hollow pcrison because of prolonged and severe contact of the centering finger therewith, is also avoided.

After the parison is arrested at position C; ,tll8 finishing mold sections are further separated by means of the cam 15 during their travel to position l), thereby completing time opening movement oft the mold. This moves the cam 32 to a position to swing i the centering finger 26 forward sulficicntly to return the blank to its verticcl position shown at D (Fig. 1) and in full lines in Figure 2. In this position, the parison is accurately centered With-respect to the fin lshing mold. When the psrison is definitel centered, a mold bottom plate (not shown) is raised to Contact with the psrison and re" tsin it in its centered position. The finishmold sections are now swung to their closed position such movement serving to Withdraw the centering arm 27 backward to the Figure 6 position to clear the finishing mold before the latter closes around the perison. The centering linger 26 is adjustable by means of a thumb piece 35 threaded on the stem of the centering finger. After the finsliing mold closes around. the perison. the la tcr is blown therein to its finished form by means of air supplied t rougli the neck mold, after which the fmislrin. mold is opened and the bottle discharge Modifications may be resorted to Within the spirit and "scope. of my invention.

What I claim is: v 1. In a glass forming machine, the combination of a mold carriage, means on the carriage to support a parison of plastic glass with the bore parison extending beyond its support, a mold, means for actuating the mold mechanism providing operating connections between said actuating means and the mold for causing the mold to enclose the psrison, and s parison centering device separate from the mold and actustcd by said mechanism to engage the arisen and center it with respect to the mo d.

net-ion oil means to suspend o. estic glass, it centering device ecnsniem ectiiste said mold ca it to c. mold, s csrc somati lessees enclose the porison, and operating connections between said mechanism and said cendevice to: causing the latter to center the perison i 1th respect to the mold.

3. The combination of means to suspend s pcrison of plastic glass, 21. centering dcvicc, a mold, a com, mechanism actuated by said com for actuating the mold to cause it to enclose the pariscn, and means operated by said mechanism to withdraw the center ing device to position to clear the mold as the letter encloses the parison.

in s gloss forming machine, the comloinetion. of a split mold, pivoted arms carrying the mold sections, means to suspend a core parison of plastic glass, means to actusite said arms and bring the mold sections together to enclose the psris'on, a centering devicepositioned to engage the parison when the mold is open and center it, and means actuated by said argns as the mold closes to withdraw the centering device.

5. In a glass forming machine, the combination of s split mold, pivoted arms csrrying the mold sections, means to suspend e bare psrison of plastic glass, means to sctusite said arms and bring the mold sections together to enclose the psrison, a centering device positioned to engage the parison when the mold is open and center it, a cam connected to one of said arms, and operating connections between the cam and said centering device.

6. in a glass forming machine, the combinetion of a rotating mold carriage, means thereon for forming and suspending a bare psrison oi glass, a sectional mold, mechanism on the mold carriage and traveling therewith for transmitting movement to the inold sections for opening the mold and for closing it around the parison. e centering device movelsle between the separated mold sections into position to center the parison with respect to the mold and means actuated by said meclisnismdcring the closing movement of the mold to Withdraw said centering device and permit the mold sections to be brought together.

7. ln a loss forming machine, the combination c means to form and support 9.

arison of plastic glass with the parison proecting upward from its support, means to actuate said support and'svving the bare psirson downward to a depending position, s mold to enclose the depending psrison, a centering device positioned to permit the free end of the psrison to be carried beyond its normal position as it swings downward and to arrest the psrison, and means to sotuste the centering device and cause it to retnrn the parison to centered position before it is enclosed by the mold.

ln as glass a: machine, the con in ori of s neck mold and recess cooperatsemis to forge 9. psriscn plastic is e glass extending upward from the neck? mold, a sectional finishing mold, means to rciete the neck mold and swing the bare )arisor. downward to and beyond a central epcnding position with respect to. the finishing mold, means to limit said swinging movement of the parison comprising a parison centering device, means for actuating said centering device and causing it to return the parison to central position with respect to the finishing mold, and means for closing the finishing mold around the centered parison.

9. In a glass forming machine, the combination of a neck mold and means cooperating therewith to form a parison of plastic glass extending upward from the neck mold,

a sectional finishing mold, means to rotate the neck mold and swing the bare parison dowmvard to and beyond a central depending position with respect to the finishing mold, a centering device ositioned to per mit the parison to swing yond its normal depending position and forming a stop positioned to arrest the parison at the end of said swing, means to then actuate said centering device and cause it to return the parison to central position with respect to the finishing'mold, and means to operate the finishing mold to enclose the parison.

10. In a glass forming machine, the combination of a neck molch'means cooperating therewith to form a parison of glass extendin upward from the neck mold, a sectional finishing mold beneath the neck mold, means to invert'the neck mold and thereby swing the parison downward to a dependin position between the open finishing mo d section's, a centering arm between said mold sections in position to arrestthe parison when' the latter has swung at short distance beyond a central position with respect to the finishing mold, and means to vthen advance said arm to center the parison and then withdraw said arm to clear the finishing mold and permit it to enclose the parison.

11. In a glass forming machine, the combination of means to form and suspend a bare parison of plastic glass, a sectional mold to enclose the parison, swinging arms carrying the mold sections, a parison centering de vice located between said arms, and means actuated by said arms to withdraw said centering device from the path of the mold scctions to permit the mold sections to come together and enclose the parison.

12. In a glass forming machine, the combination of means to form and suspend a bare parison of plastic glass, a sectional mold to enclose the parison, swinging arms carrying themold sections, a parison centering device located between said arms, a cam carried by one of said arms, and operatin con ncctionshetween said cam and the mol centering device.

13. In a glass forming machine, the combination of a rotating mold carriage, means thereon for formin and suspending a bare parison of glass, a finishing mold to enclose the parison, a parison centering device at ranged to engage the parison and center it with respect to the finishing mold while the latter is open. and mechanism carried on. the mold carriage between the finishing mold and the center of the mold carriage for moving the ccnicrin device to-operating posit'ion and for withgrawin itto permit the finishing mold to enclose t e arison 14. In a glass forming mac ine, the combination with means for forming and suspending a parison of plastic glass, of a mold, a parison centering device separate from the mold, a cam, and interconnected mechanism between the mold and centering device actuatcd by said cam and operable thereby to cause the centering device to center the parison with respect to the mold, Withdraw the centering device, and close the mold about said parison.

15. In a glass forming machine, the com bination of a sectional mold, a parison center-- ing device movable into and out of the path. of the mold sections, a cam, and mechanism actuated thereby for causing said movements of the centerin device and for opening and closing the mo d.

Signed at Toledofin the county of Lucas and State of Ohio, this 8th day of January,

RICHARD LA FRANCE. 

